ZHCSA47E July 2012 – January 2018 TPS23751 , TPS23752
PRODUCTION DATA.
| PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | ||
|---|---|---|---|---|---|---|---|
| VC (GATE DRIVE SUPPLY) | |||||||
| Output voltage; TPS23752 only | VVDD = 48 V, Sleep mode | 12 | 12.8 | 13.8 | V | ||
| IVC_ST | Startup source current | VVDD = 48 V, VC = 0 V | 1.1 | 1.5 | 2.1 | mA | |
| VVDD = 10.9 V, VC = 8.6 V | 0.9 | 1.3 | 1.8 | ||||
| IVC_OP | Operating current | VVC = 12 V, VCTL = VB | 0.9 | 1.8 | 3.0 | mA | |
| tST | Bootstrap start up time, CVC = 22 µF | VVDD = 48 V, measure time from VVC (0) → VCUV | 103 | 155 | 203 | ms | |
| VCUV | UVLO threshold | VVC rising until VSRD ↓ | 8.6 | 8.9 | 9.2 | V | |
| VCUVH | Hysteresis | 3 | 3.2 | 3.4 | V | ||
| VB (BIAS SUPPLY) | |||||||
| Output voltage | 7.5 V ≤ VVC ≤ 18 V, 0 ≤ IVB ≤ 5 mA | 4.75 | 5.00 | 5.25 | V | ||
| APD (AUXILIARY POWER DETECT) | |||||||
| VAPDEN | APD threshold voltage | VAPD ↑, measure with respect to ARTN | 1.43 | 1.50 | 1.57 | V | |
| VAPDH | Hysteresis | 0.28 | 0.30 | 0.32 | V | ||
| Leakage current | VAPD = 18 V | 10 | µA | ||||
| RT (OSCILLATOR) | |||||||
| FSW | Switching frequency in PWM mode | RT = 34.0 kΩ. Measure at GATE | 226 | 251 | 276 | kHz | |
| FVFO | Switching frequency in VFO mode | VCTL = 1.75 V, RT = 34.0 kΩ. Measure at GATE | 105 | 135 | 165 | kHz | |
| DMAX | Maximum duty cycle | VCTL = VB, Measure at GATE | 75% | 80% | 85% | ||
| CTL (CONTROL – PWM INPUT) | |||||||
| VCTL_VFO | VCTL at PWM/VFO transition point | VSRT = 0.5 V | VCTL ↓ until VSRD↑ | 1.90 | 2.00 | 2.10 | V |
| Hysteresis (1) | 35 | mV | |||||
| VSRT = 1.0 V | VCTL ↓ until VSRD↑ | 2.15 | 2.25 | 2.35 | V | ||
| Hysteresis (1) | 40.50 | mV | |||||
| TSSD | Internal soft start delay time | VCTL = 3.5 V, measure from switching start to VCSMAX | 1.87 | 3.01 | 5.09 | ms | |
| Input resistance | 70 | 105 | 145 | kΩ | |||
| VZF | Zero frequency threshold (ZF) | VCTL ↓ until GATE stops switching | 1.40 | 1.50 | 1.60 | V | |
| VZDC | Zero duty cycle (ZDC) threshold (VFO disabled) | VSRT = VARTN, VCTL ↓ until GATE stops switching | 1.55 | 1.75 | 1.95 | V | |
| Gain, VCS to VCTL(1) | 5.0 | V/V | |||||
| CS (CURRENT SENSE) | |||||||
| VCSMAX | Maximum threshold voltage | VCS↑ until VGATE ↓ | 0.22 | 0.25 | 0.28 | V | |
| VCS_VFO | Peak VCS in VFO mode | 1.60 V ≤ VCTL ≤ 1.90 V, VSRT = 0.5 V, VCS ↑ until VGATE↓ | 40 | 50 | 60 | mV | |
| 1.85 V ≤ VCTL ≤ 2.15 V, VSRT = 1.0 V, VCS↑ until VGATE ↓ | 85 | 100 | 115 | mV | |||
| VPK | Internal slope compensation voltage, see Figure 1 | D = DMAX | 32 | 40 | 50 | mV | |
| ICS_RAMP | Ramp component of ICS | D = DMAX | 12 | 16 | 25 | µA | |
| ICSDC | DC component of ICS | 1 | 2 | 3 | µA | ||
| DSLOPE_ST | Slope compensation ramp start relative to switching period. Refer to Figure 1 | 30% | 34% | 39% | |||
| t1 | Turn off delay | VCS = 0.3 V, measure tprf50–50, see Figure 2 | 50 | 90 | ns | ||
| tBLNK | Blanking period | 100 | 150 | 200 | ns | ||
| Off state pulldown resistance | 290 | 500 | Ω | ||||
| GATE (GATE DRIVER) | |||||||
| Peak source current | GATE high, pulsed measurement | 0.35 | 0.60 | 1.00 | A | ||
| Peak sink current | GATE low, pulsed measurement | 0.70 | 1.00 | 1.40 | A | ||
| Rise time (1) | tprr10–90, CGATE = 1 nF; see Figure 3 | 40 | ns | ||||
| Fall time (1) | tpff90–10, CGATE = 1 nF; see Figure 3 | 27 | ns | ||||
| Pull-up resistance | 20 | Ω | |||||
| Pull-down resistance | 10 | Ω | |||||
| SRD (SYNCHRONOUS RECTIFIER DISABLE) | |||||||
| Output low voltage | ISRD = 2 mA sinking | 0.25 | 0.45 | V | |||
| Leakage current | VCTL = 1.75 V, VSRD = 18 V | 10 | µA | ||||
| SRT (SYNCHRONOUS RECTIFIER THRESHOLD) | |||||||
| Leakage current | 0 V ≤ VSRT ≤ 5 V | 1 | µA | ||||
| THERMAL SHUTDOWN | |||||||
| Shutdown | TJ rising | 135 | 145 | 155 | °C | ||
| Hysteresis(1) | 20 | °C | |||||